Unitests update

-unittest runner works for non betterC build
-working unittest coverage generation
-unittest runner support for named tests. Simple regex is supported (* as any substring) and two list of expressions are used, one for include regex and one for exclude regex

tests/basic.d

@@ -48,6 +48,15 @@ struct CShort
     short value = 12;
 }
 
+struct CUnregistered
+{
+    mixin ECS.Component;
+
+    alias value this;
+
+    short value = 12;
+}
+
 void beforeEveryTest()
 {
     gEM.initialize(1);
@@ -72,6 +81,8 @@ unittest
     assert(tmpl_.info.components.length == 2);
     assert(tmpl_.getComponent!CInt);
     assert(tmpl_.getComponent!CFloat);
+    assert(!tmpl_.getComponent!CLong);
+    assert(!tmpl_.getComponent!CUnregistered);
     assert(*tmpl_.getComponent!CInt == 1);
     assert(*tmpl_.getComponent!CFloat == 2.0);